re: an appeal to the fediverse regarding anti-abuse
ActivityPub left holes in the spec because there were things we weren't ready to answer yet. People filled them in, understandably, in the ways they knew how. If you've followed me, you've seen me hand-wringing about it since, but i also think it's understandable.
But knowing how to do the right thing, and not break the ways things rolled out, required research.